Privilege Escalation in Microsoft Windows Print Spooler (CVE‑2022‑22718) Threatens Enterprise Systems
What It Is – An unspecified flaw in the Windows Print Spooler service allows a low‑privileged user to elevate privileges to SYSTEM.
Exploitability – Publicly disclosed; proof‑of‑concept code exists and the vulnerability is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog. CVSS 7.8 (High).
Affected Products – Microsoft Windows operating systems that include the Print Spooler service (all supported Windows 10, Windows Server 2016‑2022 editions).
Why It Matters for Trust & Control Assurance
- Access Control – The flaw bypasses least‑privilege safeguards, directly testing the control objective of “restricting privileged access to critical services.”
- Patch Management & Continuous Monitoring – Demonstrates the need for timely remediation evidence and real‑time detection of anomalous spooler activity to maintain a defensible audit trail.
- Enterprise Buyer Expectations – Organizations increasingly demand proof that privileged‑access controls are continuously verified and that remediation status is visible to auditors.
Recommended Actions
- Deploy Microsoft’s security update for CVE‑2022‑22718 immediately across all Windows endpoints.
- Enforce “least‑privilege” policies for the Print Spooler service (e.g., disable the service where not required, restrict remote printing).
- Enable logging of spooler‑related events and integrate them into a SIEM for continuous monitoring.
- Conduct a post‑patch validation audit to capture evidence of remediation for compliance reviews.
Source: CISA KEV – CVE‑2022‑22718